Results 131 to 140 of about 350,286 (305)

A conceptual design methodology for low speed high altitude long endurance unmanned aerial vehicles [PDF]

, 2000
A conceptual design methodology was produced and subsequently coded into a Visual C++ (GUI) environment to facilitate the rapid comparison of several possible configurations to satisfy High Altitude Long Endurance (FIALE) unmanned aircraft (UAV ...
Altman, Aaron
core   +1 more source

Prevalence of gallstone disease and its association with altitude and ethnicity among employee health check-upers in the Qinghai-Tibet Plateau

BMC Gastroenterology
Objective This study aimed to investigate the prevalence of gallstone disease among health check-upers (employees) in the Qinghai-Tibet Plateau and clarify the independent effects of altitude, ethnicity, and their interaction on gallstone disease risk ...
Shenggui Qi, Li Li, Yuhua Yan, Gengdeng, Xiaofeng Ma, Airong Yang, Hongguang Fan   +6 more
doaj   +1 more source

In vitro study: HIF-1α-dependent glycolysis enhances NETosis in hypoxic conditions

Frontiers in Immunology
BackgroundHypoxia plays a pivotal role in modulating immune responses, especially in neutrophils, which are essential components of the innate immune system.
Yi Ye, Yi Ye, Yi Ye, Yanjun Wang, Yanjun Wang, Yanjun Wang, Yanjun Wang, Qiying Xu, Qiying Xu, Qiying Xu, Qiying Xu, Juanli Liu, Juanli Liu, Juanli Liu, Juanli Liu, Ziqi Yang, Tana Wuren, Tana Wuren, Tana Wuren, Ri-Li Ge, Ri-Li Ge, Ri-Li Ge   +21 more
doaj   +1 more source

Investigating Pompeii Subsoil Using Geomatics and Geophysics Merged Analyses

Archaeological Prospection, EarlyView.
ABSTRACT The archaeological site of Pompeii represents an exceptional context for the application of non‐invasive and integrated investigation methods aimed at enhancing the understanding of both exposed and buried remains. This study presents the results of multidisciplinary research conducted in the Palestra Grande site, a large and strategically ...
Valentina Santoro, Antonio Merico, Vincenzo Sapia, Gianluca Catanzariti, Valerio Materni, Giacomo Patrucco, Riccardo Olivito, Anna Anguissola, Ilaria Cangiano, Antonia Spanò   +9 more
wiley   +1 more source

Dark Heritage Prospection ‐ Mapping the Treblinka II Extermination Camp Using a Magnetometer Survey and Integrated Archival Sources

Archaeological Prospection, EarlyView.
ABSTRACT The history of Nazi German extermination camps has, until recently, relied primarily on eyewitness testimony. Very few official documents detailing the facilities survived the war due to the special operation ‘Sonderaktion 1005’, dedicated to hiding their existence and extent.
Sebastian Różycki, Michał Pisz, Paweł Bylina, James Walker, Lucy Benoit   +4 more
wiley   +1 more source

High altitude polycythemia and its maladaptive mechanisms: an updated review

Frontiers in Medicine
High altitude polycythemia is a maladaptation of highlanders exposed to hypoxic environment, leading to high blood viscosity and severe cardiorespiratory dysfunction.
Shijie Tang, Shijie Tang, Shijie Tang, Wenwen Zhou, Wenwen Zhou, Ling Chen, Ling Chen, Hui Yan, Hui Yan, Lei Chen, Lei Chen, Lei Chen, Fengming Luo, Fengming Luo, Fengming Luo   +14 more
doaj   +1 more source

Archaeological Prospectivity and Terrace Morphometry Using Open Geospatial Data: A Reproducible GIS–Machine‐Learning Workflow for the Cuyes River Valley, Ecuador

Archaeological Prospection, EarlyView.
ABSTRACT This study develops and evaluates a reproducible archaeological prospectivity workflow for data‐scarce tropical landscapes by integrating restricted legacy archaeological documentation with openly accessible environmental geospatial datasets.
Julio Guerra, Israel Benavides, Marcelo Muñoz   +2 more
wiley   +1 more source

Delivery during Exercise at Altitude

, 2009
Hypoxia-induced hyperventilation is critical to improve blood oxygenation, particularly when the arterial Po2 lies in the steep region of the O2 dissociation curve of the hemoglobin (ODC).
Carsten Lundby, Lundby, Carsten, José A. L. Calbet, Calbet, José A.L.   +3 more
core   +1 more source

Long‐term assessment of the effect of OLR, HRT and temperature on domestic sewage treatment using AnMBR to enhance biomethane production

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The objective of this study was to evaluate the potential of an anaerobic membrane bioreactor (AnMBR) to treat domestic sewage by removing organic matter and nutrients while producing biogas. AnMBRs combine anaerobic digestion with membrane filtration, and stand out for their low energy consumption, low sludge production and potential for ...
Rennio Felix de Sena, Renan Holmes Ramalho, Diógenes Klayton da Silva Dias, Ana Paula de Melo Targino, Cindy Deina Farto, Gilson Barbosa Athayde Jr.   +5 more
wiley   +1 more source

The Lung At High Altitude: Between Physiology And Pathology

, 2006
The lungs play a pivotal role in adaptation to high altitude. The increase in ventilation and the rise in pulmonary artery pressure are the first features of lung response to hypoxic exposure.
CAMPIGOTTO, FEDERICA, GRAZZI, Giovanni, COGO, Annaluisa, V. Fasano   +3 more
core